23318189826109 has 2 divisors, whose sum is σ = 23318189826110. Its totient is φ = 23318189826108.

The previous prime is 23318189826031. The next prime is 23318189826133. The reversal of 23318189826109 is 90162898181332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16784016048900 + 6534173777209 = 4096830^2 + 2556203^2 .

It is a cyclic number.

It is not a de Polignac number, because 23318189826109 - 2⁷ = 23318189825981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23318189826199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11659094913054 + 11659094913055.

It is an arithmetic number, because the mean of its divisors is an integer number (11659094913055).

Almost surely, 2^{23318189826109} is an apocalyptic number.

It is an amenable number.

23318189826109 is a deficient number, since it is larger than the sum of its proper divisors (1).

23318189826109 is an equidigital number, since it uses as much as digits as its factorization.

23318189826109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 23318189826109 in words is "twenty-three trillion, three hundred eighteen billion, one hundred eighty-nine million, eight hundred twenty-six thousand, one hundred nine".